Home / 429,341.76-643,968.90-113,830.56

Finding the Fourth Proportional to 429,341.76, 643,968.90 and 113,830.56

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Solution

The fourth proportional to 429,341.76, 643,968.90 and 113,830.56 is: 170,734.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,341.76 : 643,968.90 = 113,830.56 : x
  2. Step 2: Convert to fraction form
    429,341.76/643,968.90 = 113,830.56/x
  3. Step 3: Cross multiply
    429,341.76x = 643,968.90 × 113,830.56
  4. Step 4: Simplify right side
    429,341.76x = 73,303,340,509.58
  5. Step 5: Solve for x
    x = 73,303,340,509.58/429,341.76
  6. Step 6: Final answer
    x = 170,734.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.